Fuel injection valve drive circuit

Details Fuel injection valve drive circuit Fuel injection valve drive circuit

1982-09-21

1984-06-05

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Fuel injection system

361154, F02B 300

Patent

active

044522100

ABSTRACT:
Disclosed is a fuel injection valve drive circuit for use in an internal combustion engine wherein the excitation current supplied to the fuel injection valve winding is controlled on a feedback basis so as to maintain the specified value during the period of the valve opening command signal. A control signal based on the difference between the signal representing the excitation current and the reference signal is produced, and the excitation current is controlled by the pulse width modulation signal which is produced based on the magnitude of the control signal.

REFERENCES:
patent: 4180026 (1979-12-01), Schulzke
patent: 4225898 (1980-09-01), Weber
patent: 4234903 (1980-11-01), Harper
patent: 4295177 (1981-10-01), Woodhouse
patent: 4300508 (1981-11-01), Streit
patent: 4328526 (1982-05-01), Dilger
patent: 4347544 (1982-08-01), Ohba

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